Inventor

TSENG HAN CHUNG

TW2 patents

⚠️ This page may combine multiple inventors who share the name “TSENG HAN CHUNG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ALLTRADE TOOLS LLC

1 patent

US7322110B2Jan 29, 2008

Knife with trigger actuator for retractable blade

ALLTRADE TOOLS LLC51 citations90

(unassigned)

1 patent

US6829827B2Dec 14, 2004

Artistic knife with spare blades

79 citations89